On the short term, I wouldn't attempt to do much until she's all recovered from the surgery - she'll have her hands full with that. Once she's fully healed, try not to accomodate to her fear too much, because by doing so you establish patterns or rituals which themselves can be difficult to relinquish. We always guide parents with a reliable rule of thumb: Try not to let the fear dictate the family's behavior. If all she'll do for now is stand in the tub as you wash her, that would suffice. The potty training will proceed as her development allows it. As with all children, let this happen as she is ready. Continue to introduce her to the notion, and of course reward her for her accomplishments, but don't press her about it. At some point, but now is not the point, you may decide to retire the diapers and have her bite the bullet, but that is a sound idea only when parents are sure that the child is capable.